package Usb_Usage;import java.lang.reflect.Array;import java.util.Arrays;public class Test2 {    public static void main(String[] args) {        Student[] studens = new Student[3];        studens[0] = new Student("王二",17,80);        studens[1] = new Student("张三",15,70);        studens[2] = new Student("李四",19,50);       //ageComparable a = new ageComparable();        Arrays.sort(studens);        System.out.println(Arrays.toString(studens));    }}